3. Inspection3.1 Prior to each flight, visually inspect the wheel to insure that the wheel tiebolts are secure, that there is no excessive corrosion, cracks or othervisible damage. Any indication of these would require the wheel to befurther inspected in accordance with section 6.3.2 At each 100 hour and annual inspection, inspect and service the wheelin accordance with section 6.

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4. Removal of the Wheel Assembly

4.1. Remove wheel hub cap if so equipped.4.2. Jack and secure the aircraft in accordance with the manufacturesinstructions.4.3. Ensure that the aircraft is stable.4.4. Deflate the tire by depressing the valve stem plunger until no more airescapes.CAUTION: Do not attempt to remove valve stem core, loosen theaxle nut, or disassemble the wheel halves until all tire pressure hasbeen released. Failure to do so can result in severe personal injury.4.5. Remove the valve stem core.4.6. Remove the axle cotter pin and axle nut.4.7. Carefully remove the wheel assembly from the axle.5. Disassembly of the Wheel5.1. Place the wheel assembly on a suitable working surface. Care must betaken to prevent damage to the wheel such as scratches and/or nickswhich will destroy the corrosion resistant protection of the wheel.5.2. Separate the tire beads from the wheel halves using a tire bead breakeror other suitable tool. Do not pry between the tire and wheel flange asdamage to tire and/or wheel may occur.5.3. Remove the nuts, washers and bolts that hold the wheel halves together.5.4. Separate each wheel half from the tire using care to not damage theinner tube or its valve stem.5.5. Remove the retaining snap rings, washers, felt grease seals and wheelbearings using care to prevent damage to the wheel or bearings.6. Inspection and Repair6.1. Inspect the bearing races forscoring, corrosion, signs of overheating or other physicaldamage. Loose bearing racesare cause for rejection of thewheel half. If replacement of therace is necessary carefully pressit out using a press and properlysized bushings as illustrated.

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6.2. Visually inspect each wheel half for cracks, nicks, corrosion or otherdamage. Particular attention should be paid to the tire bead seat area.Obvious cracks and severe corrosion are cause for rejection of the part.A further inspection using the dye penetrant method should beperformed on any part whose serviceability is questionable. Small nicks,scratches and pits may be blended out and polished with fine (400 grit)sandpaper and then painted and/or treated for corrosion resistance.6.3. Clean the wheel bearings in a suitable solvent and air dry usingcompressed air being careful to not allow the compressed air to spin thebearings.6.4. Inspect the bearings for pitting, cracks, evidence of overheating, orexcessive corrosion, any of which is cause for rejection of the part.6.5. Inspect the felt grease seals. Excessively worn, hardened orcontaminated seals are cause for replacement. Serviceable sealsshould be cleaned in solvent, air dried, and set aside in a clean,protected environment until required for reassembly.6.6. Inspect the felt seal retaining washers and snap rings for distortion,excessive corrosion or other physical damage which is cause forrejection.6.7. Inspect wheel tie bolts for cracks, bending, thread damage, or excessivecorrosion, any of which is cause for rejection. The tie bolts are subjectedto fatigue type loads and should be replaced whenever there is anyquestion as to their serviceability.6.8. Test the wheel tie bolt nuts by installing them onto the bolts. If the nutcan be turned by hand past the self-locking section, it must be replaced.7. Reinstalling the Bearing Races if Applicable.NOTE: Heating the wheel and/or cooling the bearing race is of minimalbenefit in the installation process.7.1. Clean the wheel bearing race bore and apply a thin coat of wheelbearing grease.7.2. Place the bearing race in thewheel bore, being careful toinsure that it is alignedproperly and not cocked.7.3. Place the wheel half in thepress as shown in theadjacent figure being sure tosupport the wheel half at thebottom of the bearing seat.Failure to do this may result

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in breakage of the wheel casting if too much force is applied.

7.4. Press the bearing race into the wheel until it is fully seated.7.5. Remove the wheel from the press and visually check to see that the raceis fully seated and that it is tight in the wheel.8. Reassembly of the WheelReassembly of the wheel is basically the reverse of the disassembly process.Assemble the wheel on a clean, flat surface being careful to not nick, scratch,or damage the protective finish of the wheel.8.1. Ensure that the wheel is clean and dry. Particular attention should bepaid to the bead area to ensure that it is clean, dry and free of grease orother contamination.8.2. Insert the inner tube into the tire. Align the red dot on the tire (its lightestpoint) with the white or yellow dot on the tube (its heaviest point). If thetube does not have a white dot, align the red dot on the tire with thevalve stem of the tube. In order to allow the tube to move freely withinthe tire, it is recommended that you lightly coat the tube and inner part ofthe tire with talc powder.8.3. Inflate the inner tube to approximately 10 psi, allowing it to take theshape of the tire. Deflate the tire to the point that it just retains its shape.8.4. Place the tire and tube onto the outer wheel half carefully inserting thevalve stem through the hole in the wheel half.8.5. Insert the inner wheel half into the tire with the tie bolt holes aligned andusing care not to pinch the inner tube.8.6. Insert the three tie bolts, with washers under the heads, through thewheel.8.7. Rotate the wheel from the working surface in order to be able to attachthe nuts to the tie bolts. Hand tighten a nut with washer on each of thetie bolts. Care should be taken to ensure that the wheel halves are incontact with each other and not pinching the inner tube.8.8. Torque the tie bolt nuts: 90 inch-pounds for 1/4" bolts and 150 inchpounds for 5/16" bolts. Observe the amount of torque required to turnthe nut due to the locking friction of the nut and add this to torquerequirements to get the proper torque wrench reading.8.9. Repack the bearings using MIL-G-81322 grease such as Aeroshell 22,Mobil 28, or equivalent.8.10. With the wheel on a flat working surface, insert a wheel bearing. Lightlycoat the bearing race with bearing grease before installing the bearing.8.11. Install the washers, felt grease seal and retention snap ring. A light coatof light weight oil on the felt grease seal is recommended.ICA for Grove 59-1A & 59-1M Wheels Rev IR

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8.12. Turn the wheel over and repeat steps 8.10. and 8.11.8.13. Place the wheel in a protective enclosure and inflate to 60 psi. Deflatethe tire by depressing the valve stem plunger and re-inflate to thepressure recommended by the aircraft manufacturer.9. Reinstalling the Wheel on the Aircraft9.1. Inspect the axle to ensure that it is clean, dry and in serviceablecondition.9.2. Install the wheel onto the axle.9.3. Install the axle nut and hand tighten ensuring that that the wheelbearings are fully seated on the axle.9.4. While slowing rotating the wheel, tighten the axle nut until you can nolonger turn the wheel. Care must be taken to ensure that the valve stemis not damaged during this process.9.5. Loosen the axle nut only enough so that the wheel runs free, or with verylittle drag.9.6. Align the axle nut to the nearest hole in the nut with the cotter pin slot inthe axle. If you need to move the nut for alignment, first try to tighten it.If the wheel still moves with little or no resistance, use that alignment. Ifthere is increased resistance to rotation, loosen the nut to the next hole.97. Install a new cotter pin. One end of the cotter pin should fold out andbend over the end of the axle to its center. The other end should bebent back toward the wheel and shortened if necessary to avoid contactwith the wheel. Extreme care must be taken to ensure that the cotter pindoes not interfere with the valve stem or other parts of the wheel whenthe wheel is rotated.9.8. Reinstall the wheel hub cap if so equipped.9.9. Rotate the wheel to ensure that it is secure and rotates freely.9.10. Lower the aircraft to the ground following aircraft manufacturersinstructions.10. Protective CoatingsIf the protective coating of the wheel is damaged, it should be repaired in thefollowing manner:10.1.Aluminum Wheels: Anodize per MIL-STD-8625 Type IIB Class 1 orAlodine per MIL-C-5541 Class 1A and paint with Cardinal Industrial Paint6424-69147 S/G Met Silver or 6409-10.1 Gloss White.10.2.Magnesium: Dichromate Finish (Dow #7) per MIL-M-3171 Type 3 andpaint with Cardinal Industrial Paint 6424-69147 S/G Met Silver or 640910.1 Gloss White.